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Originally Posted by Russ Dill
Still confused though, I'd think that the processor would need a window to read/write to that memory. I suppose I'll have to look more closely at how the msm video driver works. It seems surprising that the platform needs 83MB of memory that the kernel never sees.
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The kernel doesn't see it because the integrated devices take that memory for them selves at start and the kernel has no business mapping out anything there. Everything that is integrated has to use the in-die RAM to function. And there are a lot of integrated parts in the galaxy
You don't want to chose whether you want to use GPS and Camera or GPS and Compass. But not all of the 3 together, since there isn't enough free RAM in the die for the components to operate. Galaxy most probably has 192mb of ram.